4 celery sticks, cut into batons
1 head red chicory, trimmed and separated into leaves
1 fennel bulb, sliced into fingers
1 garlic clove, peeled and halved
½ bunch radishes, quartered
4 sprigs fresh thyme
1 bay leaf
1 tbsp cornflour
grating nutmeg
crack black peppercorns
200ml/â pint vegetable stock
250g/9oz emmental, grated
250g/9oz gruyère, grated
handful toasted sourdough cubes